KR19980063114A - Relay Call Processing in Personal Communication Switching System - Google Patents

Abstract

The present invention relates to a relay call processing method in a personal communication exchange system capable of relaying outgoing signals from an exchange to another station, wherein each of a plurality of mobile subscriber stations is connected through a plurality of base station controllers corresponding thereto. In a personal communication exchange system having a plurality of ASS-Ws and a personal communication exchange system in which HLRs are connected through INS and ASS-T, the incoming line is requested by a request from the calling party's foreign exchange (60A) accommodating a PSTN fixed subscriber. The first step of occupying the second step is to receive the called party transmitted from the other station exchange 60A and transfer the called party to the UPC 80AC of the ASS-T 80A, routing from the UPC 80c. When information is requested and a routing information response message output from the HLR 100 is transmitted to the UPC 80AC in response to the request, the UPC 80AC is unblocked to the NTR 78C of the INS 78. Translate A third step of requesting and a fourth step of occupying the outgoing line based on the personal communication number according to the number translation result notified from the NTR 78C in response to the request.

Description

Relay Call Processing in Personal Communication Switching System

The present invention relates to a relay call processing method in a personal communication switching system, and more particularly, to a relay call processing method in a personal communication switching system which is capable of relaying outgoing signals from another station to another station.

For exchange systems where only the functions for call processing of wired subscriber terminal periods connected through subscriber lines of well-known schemes are assumed, mobility is recently given to subscriber terminals, and call establishment and The personal mobile communication service function is enabled.

According to a personal communication exchange (PCX) for realizing such a service function of personal mobile communication, a wired / wireless integrated system in which a wireless subscriber processing function is added in addition to a service processing function for an existing wire subscriber. In addition, to provide various services guaranteed in the personal communication network and to provide a variety of communication services provided in the existing network (網) to provide the interworking function with other networks (ISDN, PLDN, etc.) heterogeneous with the personal communication network.

1 is a schematic block diagram of a general personal communication exchange system. In the figure, reference numerals 10a to 10n denote subscriber terminals referred to as so-called 'mobile phones' for carrying out communication based on mobility while personal subscribers are portable, and reference numerals 20a to 20n denote multiple subscriber terminals and calls, respectively. A base station which transmits / receives processed data to perform transmission / reception of radio signals to each subscriber station, conversion of communication protocols, encryption / decryption, and the like.

In addition, 30a to 30n indicate a base station controller which manages a plurality of base stations and performs functions related to allocation control and hand-off of communication channels for the subscriber stations 10-10n.

In addition, 40 denotes a personal communication switch interfaced with the base station controllers 30a-30n; 30 in accordance with IS-651 / IS-634 standard, and 50 denotes a subscriber information management device (Home) described below for each subscriber station 10. It indicates an authentication center that is matched with a location register (HLR) and performs a license processing for an arbitrary subscriber station 10 or the like.

In addition, reference numeral 60 denotes a personal communication switch of another station for mutual communication of communication information by being interconnected with the personal communication switch 40 through a trunk medium.

2 is a view for explaining a schematic configuration of the personal communication switch 40 shown in FIG. 1, in which 72a to 72n correspond to the base station controllers 30a to 30n to perform wireless mobile communication. An access switching subsystem for wireless subscriber (ASS-W) for executing the call processing function of the subscriber station 10 for. Here, the ASS-W (72a-72n) has a systemic horizontal structure so that it can be expanded in units of ASS-W if necessary, while performing the call processing function or self-operation maintenance function for most mobile communication. Will have In addition, 74 denotes a conventional wired analog subscriber terminal, and 76 denotes an access switching subsystem for subscriber (ASS-S) for executing the call processing function of the wired analog subscriber terminal 74. As shown, the ASS-S 76 also performs most of the call processing function for the wired subscriber terminal 74 or its own operation maintenance function, and if necessary, the system can be expanded in units of the ASS-S. It will have a horizontal structure.

In FIG. 2, reference numeral 78 denotes the entirety of the corresponding personal communication switch 40 through a data link (ie, an optical link) for the ASS-W 72 (72a-72n) and the ASS-S 76. Interconnection network subsystem (INS) in charge of call processing / administrative control (INS), the INS (78) is the ASS-W / ASS-S (72) for the configuration of the switching network (TST) And a space switch associated with the time switch T located at 76, and storing information on the subscriber station 10 existing in the service area of the corresponding personal communication switch 40. And a VLR (Visitor Location Register) is located for mobility management functions such as management. Here, the VLR temporarily stores the entire information about subscriber terminals 10, --- existing in the area managed by the corresponding personal communication switch 40, and the information is called by the personal communication subscriber. In the case of setting a, it is transmitted to the personal communication switch 40 in response to a request of the personal communication switch 40, and the information in the VLR is continuously modified as the subscriber terminal 10 moves.

In FIG. 2, reference numeral 80 denotes an access switching subsystem for trunk (ASS-T) for relay line matching between the personal communication switch 60 of the other station. 80) includes a public switched data network (PSDN) and a comprehensive information and communication network for the unification of exchange / transmission / subscriber terminals on the premise of digital technology to provide telephony / telephone and various non-system-based services. Integrated service digital network (ISDN), which has at least one in a personal communication network, functions as a database management system that stores and manages subscriber parameters and location information for all terminals registered in its PCN, while providing access to subscriber terminals. In addition to registering important data including basic services and supplementary services, the routing function of the called party A home location register (HLR) that performs the operation is connected.

Also, reference numeral 82 is connected to the INS 78 via a data link to access the No. 7 signaling matching subsystem for SS No-7 signal processing matching (ASS-7). ).

In FIG. 2, reference numeral 84 denotes a central control system composed of a processor and a peripheral device for performing a comprehensive operation management and maintenance function of a corresponding exchange by signaling with the INS 78 (Work station). control system (CCS), and the CCS 78 collects and processes the charging data transmitted from the exchange 40 while interworking with the corresponding exchange 40 according to the connection standard between the personal communication exchange and the charging center. A CAMA (Centralized Authomatic Message Accounting) 86 is connected to the switch 40, which performs the centralized operation / maintenance / maintenance function for the entire component of the personal communication network while interworking with the TMN Q interface. An operation and maintenance center (OMC) and a network management center (NMC) 88 for managing a personal communication network are connected.

According to the personal communication switching system having such a configuration, for example, when call setup is required from a mobile subscriber station (e.g., 10a) accommodated in the base station controller 30a, the personal communication switch 40 from the base station controller 30a according to the call setup request is required. ASS-W 72a of the ASS-W 72a executes call setup processing for a mobile subscriber station or a wired subscriber terminal (e.g. 74) of an incoming destination accommodated in its own country in response to the call setup request, or a personal communication switch (e.g. The call establishment process for the mobile subscriber station or the wired subscriber terminal accommodated in 60) is governed, and the billing information is processed and transferred to the CAMA 86 through the CCS 84 for such call establishment request.

In addition, when a call setup is generated and transmitted to a mobile subscriber station (for example, 10a) received in the home country, the corresponding ASS-W 72a and the base station controller 30a of the personal communication switch 40 are transmitted. Call setting processing is performed for the subscriber station 10a to be received.

On the other hand, in the above-mentioned personal communication exchange system, a relay call processing function is urgently required to relay a call originating from a foreign exchange to a foreign exchange so that a call route between an originating subscriber of the other exchange and an incoming subscriber of an arbitrary foreign exchange is established. It is true.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object thereof is to provide a relay call processing method in a personal communication exchange system capable of relaying outgoing signals from other exchanges to other exchanges.

According to one embodiment of the present invention for realizing the above object, a plurality of mobile subscriber stations are each connected to a plurality of base station controllers through a plurality of ASS-W, INS and ASS-T via the HLR is A personal communication exchange system having a connected personal communication switch, comprising: a first step in which a PSTN fixed subscriber occupies an incoming line by a request from an originating foreign exchange in which a subscriber is accepted; In a second step of forwarding the number to the UPC of the ASS-T, if routing information is requested from the UPC and a routing information response message output from the HLR is transmitted to the UPC in response to the request, the UPC receives the NTR of the INS. Based on the third step of requesting the translation of the unblocked station number and the personal communication number according to the number translation result notified by the NTR in response to the request. The relay call processing method in a personal communication exchange system of a fourth step of occupying the field lines is provided.

According to the present invention made up of the above-described steps, a call path between an originating subscriber of another foreign exchange and a destination subscriber of another foreign exchange is established through a personal mobile communication exchange by relaying outgoing signals from the other exchange to the other exchange. The originating / receiving subscriber of the exchange period can normally conduct a telephone call.

1 is a diagram illustrating a general personal mobile communication system;

FIG. 2 is a schematic block diagram of the exchanger shown in FIG. 1;

FIG. 3 is a block diagram of an essential part of the personal communication exchange shown in FIG. 2 for executing a relay call processing method in a personal communication exchange system according to an embodiment of the present invention; FIG.

4 is a flowchart illustrating a relay call processing method in a personal communication exchange system according to an embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

10: subscriber station, 20a-20n: base station,

30a-30n: base station controller, 40: exchanger,

50: Certification Center, 60A, B: Foreign Exchange

72a-72n: ASS-W, 78: INS,

80A, B: ASS-T,

100: HLR.

Hereinafter, with reference to the accompanying drawings will be described in detail the operation according to an embodiment of the present invention.

3 is a block diagram of a personal communication exchange system to which a relay call processing method is applied according to an embodiment of the present invention, in which any outgoing subscriber housed in the foreign exchange 60A is connected to the foreign exchange 60B. It is shown assuming a case of calling any called party that is accommodated in.

In the figure, reference numerals 60A and B denote foreign exchangers that accept a plurality of Public Switched Telephone Network (PSTN) fixed subscribers and perform various call processing operations in response to call processing requests from the PSTN fixed subscribers.

In addition, the INS indicated by the reference numeral 78 includes an LCC (LR call control; 78A) for providing data required for mobile subscriber call processing, the LCC (78A) is the PCC (not shown) for mobile subscriber calling If subscriber information is provided to the subscriber or the subscriber of the destination responds to paging, the subscriber information of the recipient is called as a call control block, and the TLDN is assigned when the TLDN is allocated to the subscriber. Will be performed. In addition, the INS 78 includes: a location register service control (LRSC) 78B for performing an operation processing procedure for an interface between an LCC 92A as a personal communication application unit (MAP), an LLU and a question-and-answer operation (TCAP); A number translation unit (NTR) which obtains and processes the information of the called party by translating outgoing / incoming call, incoming call while translating the international number, area code and country code; Switching network control (SNC) 78D which performs a function of assigning and releasing for connection / release of a call to a channel of the entire switch (T-S-T switch network) of the personal communication system; Operational procedures such as access to TACP, application processor-to-action associations, management of indication and dialog numbers, basic incubation and decryption of component parameters with reference to action / error definitions, action class and timer values A Call Processing Service Control (CPSC) 78d for performing a display function and an RCO 78E are further included. In addition, the INS 78 is connected to the HLR 100 via a ASS-T (80A) signaled to be able to access the HLR (100).

ASS-T, denoted by reference 80A, is an originating trunk matching subsystem that performs most call processing functions other than numbering and number translation for relay lines. SMSH (Signaling Message Handing Subsystem; 80AA) to perform MTP (Message Transfer Part) function and SCCP (Signaling Connection Control Part) function to perform the test and maintenance of signal link and signal routing; UPI (80AB); UPC 80AC and; It is comprised including MDGI 80AD. In addition, the ASS-T 80A is connected to another station exchanger 60A in which a fixed subscriber as an originating subscriber is accommodated.

In addition, reference numeral 80B shown in FIG. 3 is a called party trunk matching subsystem composed of the same components as the above-described ASS-T 80A, and a detailed description of the components configured therein will be omitted. Here, the ASS-T (80B) is connected to another exchanger (60B) in which a fixed subscriber as an incoming subscriber is accommodated.

Next, a method for processing a middle call in a personal communication exchange system according to an embodiment of the present invention configured as described above will be described in detail with reference to the flowchart shown in FIG. 4.

First of all, the foreign exchange switch 60 in which the PSTN fixed subscriber is accommodated starts to occupy the incoming start address message (IAM message; outgoing line) to the SMHS 80AA configured in the ASS-T 80A. Forward the message to forward the required number and other information), the SMHS (80AA) forwards the received IAM message to the UPI (80AB), and the UPI (90AB) sends the corresponding IAM message to the UPC ( 80AC), and the incoming line occupancy procedure is performed by the UPC 80AC delivering the corresponding IAM message to the MDGI 80AD (step 200).

Then, if the continuity test is necessary, the continuity procedure is performed accordingly (step 210), followed by analyzing the prefix received from the other exchange 60 and receiving the called number (step). 220).

That is, in step 220, a subsequent address message (SRM message) for the called number information transmitted from the foreign exchange 60 is forwarded to the forward address following the leading address message when the called number information is transmitted from the SMHS 80AA. When received, the SMHS (80AA) forwards the called number according to the SRM message to the UPI (80AB), the UPI (80AB) forwards the called number to the UPC (80AC), the UPC (80AC) On the basis of the called party's number, judges whether the number of received digits ≥ station number is analyzed and if the result is 'number of digits received ≥ station number', request translation of the station number to NTR (78C) of the INS 78. do. Subsequently, in response to the request, when the NTR 78C forwards its own personal communication number notification message to the UPC 80AC, the UPC 80AC determines whether the number of received or received digits ≥ the maximum number of digits. If the result of the determination is not 'the number of received or received digits ≥ the maximum number of digits', the additional digit is received based on the SAM message from the foreign exchange 60 through the SMHS 80AA and the called number accordingly. To the UPI 80AB. Thus, the UPI (80AB) notifies the called party to the UPC (80AC), wherein the UPC (80AC) judges whether 'the number of received or received digits ≥ the maximum number of digits', and the judgment result' If the number of received or received digits ≥ the maximum number of digits is', the outgoing line occupation process is performed in step 240 to be described later.

On the other hand, the UPC 80AC notified of the called number from the UPI 80AB requests routing information to the CPSC 7878D of the INS 78 to perform the routing information request procedure in step 230. In the above, when the UPC 80AC notified of the called number from the UPI 80AB requests routing information to the CPSC 78D of the INS 78, the CPSC 78D receives the ASS-T ( 80A) requests routing information to the HLR 100, and the HLR 100 transmits a routing request message to the LRSC 78B in response to the request.

The LRSC 78B, which has received the routing request message, forwards the routing request message to the LCC 78A, and the LCC 78A analyzes the internal data structure of the called party in response to the request and then receives the incoming message. After checking the subscriber's status information (activating call waiting function during a call), assigning TLDN (Temporary Local Directory Number) as a response message of the corresponding routing information request message, and putting the information into the routing information response message to display the LRSC (78B). ), The LRSC 78B forwards the corresponding routing information response message to the HLR 100.

Subsequently, when the HLR 100 transmits the routing information response message assigned with the TLDN to the CPSC 78D, the CPSC 78D transmits the routing information response message with the corresponding TLDN assigned to the ASS-T 80A. The UPC (80AC) requests an unblock station number translation to the NTR (78C) of the INS (78).

After the routing information request procedure in step 230 is performed through the above process, the process proceeds to step 240 to perform the outgoing line occupation process.

That is, at 240, the NTR 78C notifies the UPC 80AC of the personal communication number to the UPC 80AC of the ASS-T 80A, and a routing request message to the RCO 78E. If so, the RCO 78E requests an ISUP outgoing line occupation to the UPC 80BC of the ASS-T 80B, which, in response to the request, occupies the outgoing line after the UPC 80BC occupies the outgoing line. After sending the outgoing line occupancy request statistics message to 80BD), the outgoing line occupancy message is notified to the UPC 80AC of the ASS-T 80A.

Subsequently, the UPC 80AC notified of the outgoing line occupancy message relays the leading address message (i.e., IAM message) transmitted from the foreign exchange 60A to the UPC 80BC in step 200, and the IAM. The UPC 80BC, which has relayed the message, requests the IPI message to be sent to the UPI 80BB, and according to the request, the UPI (BB) requests the IAM message to be sent to the SMHS 80BA. The SMHS 80BA sends the corresponding IAM message to the foreign exchange 60B.

In such a state, the UPC 80BC of the ASS-T 80B terminates the outgoing line occupation procedure in step 240 by transferring the outgoing line occupation completion statistics message to the MDGI 80BD.

According to the relay call processing method in the personal communication exchange system according to an embodiment of the present invention as described above, an outgoing signal from another station exchange is relayed to another station through the corresponding personal communication exchange system, thereby through the personal mobile communication exchange. The call path between the originating subscriber of the other exchange and the destination subscriber of the other foreign exchange is established so that the originating / receiving subscriber of the other station is normally carried out.

Claims (4)

A personal communication exchange system comprising a plurality of ASS-Ws connected to each other through a plurality of base station controllers corresponding to a plurality of mobile subscriber stations, and a personal communication switch connected to the HLRs via INS and ASS-T. A first step in which the PSTN fixed subscriber occupies the incoming line by a request from the originating foreign switching center 60A, A second step of receiving the called party transmitted from the other station exchange 60A and forwarding the called party number to the UPC 80AC of the ASS-T 80A; When routing information is requested from the UPC 80c and a routing information response message output from the HLR 100 is transmitted to the UPC 80AC in response to the request, the UPC 80AC sends the NTR of the INS 78. A third step requiring an unblock station number translation at 78C, and And a fourth step of occupying the outgoing relay line based on the personal communication number according to the number translation result notified from the NTR (78C) in response to the request. 2. The method of claim 1, wherein the first step comprises a step in which the SMHS 80AA receives an incoming lead message from the foreign exchange 60A, and the incoming precursor message is notified to the UPI 80AB. Relay call processing method in a personal communication switching system, characterized in that the step consisting of being notified to the UPC (80BB) through 80AB). The method as claimed in claim 1, wherein the second step includes the SMHS 80AA receiving additional digits from the foreign exchange 60A and continuously receiving additional digits when the number of digits received is less than the PREFIX analysis number. On the other hand, if the received number of digits reaches the station number analysis step, requesting the station number translation to NTR (78C), in response to the request NTR (78C) performs the number translation to the local personal communication number to UPC (80AC) And receiving an additional digit from the foreign exchange 60A when the number of digits received falls below the maximum number of digits, while proceeding to the fourth step when the number of digits received reaches the maximum number of digits. Relay call processing method in a personal communication switching system characterized in that. The NTR 78c of claim 1, wherein the fourth step notifies the UPC 80c of the personal communication number according to the number translation result in response to the request from the UPC 80BC. Requesting routing to RCO 78E, requesting ISUP outgoing line occupancy to UPC 80BC of ASS-T 80B, and responding to the request ) Occupying the outgoing line and notifying the outgoing line occupancy message to the UPC (80AC) of the ASS-T (80A), the UPC (80AC) forwards the leading message to the UPC (80BC), the USP (80BC) requests the forward message to UPI (80BB), and according to the request, the UPI (80BB) requests the forward message to SMHS (80AA), and the SMHS (80BA) receives the destination foreign exchange (60B). Relay call processing method in a personal communication exchange system, characterized in that consisting of the step of transmitting the first message.